Unix shell daemon

daemon.sh

#!/bin/sh

#1. сhange CWD to /
cd /

#2. disconnect from current terminal
exec >/dev/null
exec 2>/dev/null

#3. forked and leave in background
(
  #4. SIGTERM ignoring
	trap "" TERM
	
	#5. some action
	while true
	  do
	  date >> /tmp/test
	  sleep 10 
	done
	
) > /dev/null 2>&1 &

#the child remains in the background 
#the parent process is finished

echo "Parent exit" >> /tmp/test